# Source: https://docs.perplexity.ai/docs/cookbook/showcase/cycle-sync-ai.md

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.perplexity.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# CycleSyncAI | Personalized Health Plans Powered by Sonar API

> iOS app that delivers personalized diet and workout recommendations for women, powered by Apple HealthKit and Perplexity's Sonar Pro API.

**CycleSyncAI** is an iOS app designed to provide personalized **diet and workout recommendations** tailored to a woman's **menstrual cycle phase**.

By integrating menstrual data from Apple **HealthKit** and optional user profile inputs (age, weight, height, medical conditions, dietary restrictions, goals, and preferences), the app generates dynamic, phase-aware suggestions to support holistic wellness.

Unlike static wellness tools, **CycleSyncAI** leverages **Perplexity's Sonar Pro API** to deliver **expert-informed**, LLM-generated guidance — including a daily grocery list and motivational feedback — customized to the user's cycle and lifestyle.

## Problem & Solution

> **Why it matters:**\
> Most apps overlook the hormonal changes that affect women's fitness and nutrition needs across their cycle, leaving users with generic advice.

**CycleSyncAI** bridges this gap by combining Apple HealthKit data with Sonar Pro's LLM to generate **adaptive, cycle-aware recommendations** for better health outcomes.

## Features

* **Personalized diet & workout suggestions** per cycle phase
* Syncs with Apple HealthKit for real-time cycle tracking
* User profile inputs for advanced personalization (age, goals, restrictions, etc.)
* **Auto-generated daily grocery list**
* Smooth, modern UI with gradients and subtle animations
* **Motivational AI feedback** tailored to user preferences
* Local data storage and private processing

## Motivation

> "I wanted a tailored regime for myself and couldn't find it all in one place."

**CycleSyncAI** was born from the need for a science-backed, easy-to-use app that adapts wellness guidance to women's natural hormonal rhythms, something missing in most mainstream fitness and nutrition platforms.

## Repository Structure

```text  theme={null}
CycleSyncAI.xcodeproj          → Xcode project file  
CycleSyncAI/                   → Source code  
├── EatPlanViewController.swift        → Diet plan generation & display  
├── WorkoutPlanViewController.swift    → Workout plan generation & display  
├── HomepageViewController.swift       → Navigation & main screen  
├── UserProfileViewController.swift    → Input & storage of user data  
├── HealthManager.swift                → Apple HealthKit menstrual data  
├── UserProfile.swift                  → Local profile model  
Main.storyboard               → App UI & layout  
Assets.xcassets              → Images & app icons  
Info.plist                   → Permissions & configurations  
```

## Setup Instructions

1. Clone the repo
2. Open in **Xcode**
3. Ensure Apple HealthKit is enabled on your device
4. Insert your **Sonar Pro API key**
5. Run the app on a physical device (recommended)

## Sonar API Usage

The app sends structured prompts to the **Sonar Pro API** including:

* Cycle phase (from HealthKit)
* User profile info (age, weight, goals, etc.)
* Meal preferences & restrictions

In return, it receives:

* **Personalized diet plan**
* **Custom workout plan**
* **Daily grocery list**
* **Motivational feedback**

These are parsed and rendered as styled HTML inside the app using WebViews.

## Demo Video

<iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/R558uRLNvUM" title="YouTube video player" frameBorder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />

> *Note: The LLM takes \~30–60 seconds per request. This wait time was trimmed in the video for brevity.*

## Impact

**CycleSyncAI** empowers women to make informed, body-aware decisions in daily life. The app supports better:

* Energy management
* Fitness results
* Mental well-being
* Motivation and confidence

It also reduces decision fatigue with automatically prepared grocery lists and uplifting guidance.

## Links

* [GitHub Repository](https://github.com/medhini98/cyclesyncai-api-cookbook)